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Originally Posted by davidfor
Sorry, that article is wrong. I didn't read past the first suggestion because it was absolute crap.
You should not trickle charge Li-Ion batteries. If you do, it is dangerous. And by dangerous, I mean potentially explosive. They get charged to full, then the charger turns off. They will not charge again until the battery charge drops below a certain charge level.
And just to be clear, "trickle charging" is used to keep a batteries charge level at 100% by maintaining a low charging current to the battery. This is used for some battery chemistries. But not Li-Ion.
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Maybe you should have read a little farther, it does NOT recommend trickle-charging as a best practice. Instead, it was saying that smart protection built into phones makes this not a big deal, but that it's best NOT to trickle-charge:
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The best thing to do: Don't worry about this too much. Plug the phone in (or place on the wireless charger) when you go to sleep; if you wake up sometime in the night, unplug it/move it to prevent constant trickle-charging. If you don't wake much, plug your phone into a smart plug that's on a schedule so it turns off.
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Which is consistent with the trickle-charge recommendation at Battery University:
https://batteryuniversity.com/index...._ion_batteries